respawning with triggers in unity,How do i make only my player respawn?

im making a game where a ball has to keep on the platform, but if it falls off it hits my collider and respawns back to the beginning. when i try to add boxes or anything and they fall off the map, it hits the collider and then respawns me because it thinks the box is a player. anyone got a code or know how to fix this please?